WO2011068278A1 - Lighting apparatus - Google Patents

Lighting apparatus Download PDF

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Publication number
WO2011068278A1
WO2011068278A1 PCT/KR2009/007622 KR2009007622W WO2011068278A1 WO 2011068278 A1 WO2011068278 A1 WO 2011068278A1 KR 2009007622 W KR2009007622 W KR 2009007622W WO 2011068278 A1 WO2011068278 A1 WO 2011068278A1
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WO
WIPO (PCT)
Prior art keywords
layer
solar cell
oled
oled device
cell
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PCT/KR2009/007622
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French (fr)
Korean (ko)
Inventor
반태현
김광복
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금호전기주식회사
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Priority to US13/513,320 priority Critical patent/US8643028B2/en
Publication of WO2011068278A1 publication Critical patent/WO2011068278A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F21S9/037—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit and the lighting unit being located within or on the same housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/006—General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
    • H01L31/14—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the light source or sources being controlled by the semiconductor device sensitive to radiation, e.g. image converters, image amplifiers or image storage devices
    • H01L31/147—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the light source or sources being controlled by the semiconductor device sensitive to radiation, e.g. image converters, image amplifiers or image storage devices the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers
    • H01L31/153—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the light source or sources being controlled by the semiconductor device sensitive to radiation, e.g. image converters, image amplifiers or image storage devices the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers formed in, or on, a common substrate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a lighting device, and more particularly, to an OLED lighting device having a solar cell structure, and to a lighting device capable of realizing low power driving and functional windows with transparent solar cells and double-sided OLED lighting.
  • OLED development began in 1987. OLEDs can be classified into low-molecular materials and high-molecular materials.Kodak's engineers proposed a device structure based on low-molecular-layer laminates.In 1990, three years after low-molecular-materials, OLED-based polymers were used. Light emission was realized. Since then, research and development has been divided into companies using polymer materials and companies using low molecular materials.
  • Such an OLED is a current-driven light emitting device, and unlike LCD technology, the OLED is capable of self-emission, can be driven at low voltage, and can be made thin. It has a wide viewing angle and fast response speed. Unlike ordinary LCDs, the image quality does not change even when viewed from the side, and afterimages remain on the screen. In addition, the small screen has an advantageous price competitiveness due to the image quality of LCD and simple manufacturing process.
  • OLED organic light emitting material
  • the present invention has been made in order to solve the above demands, and an object thereof is to provide an OLED lighting apparatus having a solar cell structure.
  • Another object of the present invention is to provide a lighting device capable of controlling the light absorption efficiency of a solar cell by controlling the transmittance and reflectance of the OLED element layer through color coordinate conversion control of the OLED element layer of the control unit.
  • the lighting apparatus according to an embodiment of the present invention, the second OLED device layer formed on the window, the solar cell formed on the second OLED device layer, and the first OLED device layer formed on the solar cell It is provided.
  • the solar cell generates electricity from at least one of light emitted from the first OLED device layer, light emitted from the second OLED device layer, or external light.
  • the solar cell may include a second solar cell formed on the second OLED element layer and a first solar cell formed on the second solar cell, wherein the glass substrate is disposed between the first solar cell and the second solar cell. This may be intervened further.
  • the said glass substrate is an IZO glass layer or an ITO glass layer.
  • a first buffer layer for the passivation of the first OLED device layer between the first solar cell and the first OLED device layer, between the second solar cell and the second OLED device layer.
  • a second buffer layer for passivation of the second OLED device layer may be further included.
  • the second OLED device layer is a color coordinate conversion light source, and may control the transmittance of external light or reflect internal light such as light emitted from the first OLED device layer.
  • the electricity generated in the solar cell may be supplied to the first OLED device layer or the second OLED device layer.
  • the electricity generated in the solar cell may be stored in a battery.
  • the lighting apparatus includes a solar cell formed on the window, and an OLED element layer formed on the solar cell.
  • the solar cell may generate electricity from at least one of light emitted from the OLED device layer or external light.
  • a buffer layer for passivation of the OLED device layer may be further included between the solar cell and the OLED device layer.
  • a reflective plate is further interposed between the window and the solar cell, or a reflective material is applied to the solar cell side of the window.
  • the electricity generated in the solar cell may be supplied to the OLED device layer.
  • the electricity generated in the solar cell may be stored in a battery.
  • the lighting device according to the present invention can provide an OLED lighting device having a solar cell structure. Through this, low-power driving and functional windows can be realized with transparent solar cells and double-sided OLED lighting.
  • the second OLED element layer is the first OLED element through color coordinate conversion.
  • the second OLED element layer operates as a blocking color of the external light through color coordinate conversion, thereby serving as a functional window. can do.
  • the second OLED device layer has an advantage of making the second OLED device layer transparent or having a specific color to be translucent through color coordinate conversion.
  • the lighting device through a simple structure, absorbs external light or internal light from the solar cell to increase energy efficiency, and a reflector (not shown) interposed between the window and the solar cell. ), Or when the reflective material is applied to the solar cell side of the window, it has the advantage of improving the light absorption efficiency of the solar cell.
  • FIG. 1 is a cross-sectional view of a lighting apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a lighting apparatus according to a second embodiment of the present invention.
  • FIG. 1 is a cross-sectional view of a lighting apparatus according to a first embodiment of the present invention.
  • a lighting apparatus according to a first embodiment of the present invention will be described with reference to FIG. 1.
  • the lighting device includes a second OLED device layer 450 formed on the window 500, a solar cell 200 and 250 formed on the second OLED device layer 450, and a cell formed on the solar cell.
  • a first OLED device layer 400 is provided.
  • the lighting device is a lighting device used in a living room, a kitchen, a bedroom, a bathroom, etc. for home use, as well as a lighting device used in a commercial facility such as an office, a factory, a restaurant, a restaurant, a vehicle, a vehicle, a vehicle, It is also applicable, if there is a glass window 500, etc. that receives the external light is a lighting device that can be used anywhere.
  • the first OLED device layer 400 or the second OLED device layer 450 may be formed of a substrate, an anode layer, an organic material layer, and a cathode layer, and the organic material layer is generally formed in a thin film structure.
  • the organic material layer In the case of using a high molecular organic material, the organic material layer generally has a two-layer structure of a light emitting layer and a hole injection layer.
  • the organic material layer includes a hole injection layer, a hole transport layer, a light emitting layer, and a hole block layer. It is common to have a multilayered structure, such as the 5-layered structure of an electron carrying layer.
  • the substrate is generally made of glass, and the grid on the substrate is in contact with the anode layer, and serves to lower the electrical resistance value of the anode layer when connecting the anode layer to the wiring part of the driving device for lighting.
  • the grid is usually a metal with a smaller resistance value than the anode layer, which will be chromium (Cr), copper (Cu), molybdenum (Mo), nickel (Ni), aluminum (Al), silver (Ag) or gold (Au). Can be.
  • the grid may be formed by a process such as deposition on a substrate, application of photosensitive photoresist, development, etching, or the like. If necessary, since the substrate of the present invention should be transparent, it may be implemented without a grid.
  • the anode layer is an anode electrode corresponding to the anode of the OLED element layer, and the material is indium tin oxide (ITO) or indium zinc oxide (IZO), which has a small surface resistance and good permeability.
  • Transparent conductive materials can be used. If there is a grid, by forming an anode layer on the grid, the resistance of the anode layer is lowered, and then the power consumption and driving voltage are lowered when driving the OLED device by connecting with an external driving circuit, thereby improving the electrical characteristics of the device. .
  • the organic material layer is formed on top of the anode layer and emits light in the OLED device layer to improve light emission efficiency (Hole Injection Layer (HIL), Hole Transport Layer (HTL)), Emitting Material Layer EML), an Electron Transfer Layer (ETL), an Electron Injection Layer (EIL), and the like are sequentially formed.
  • Organic materials used as the organic material layer are Alq3, TPD, PBD, m-MTDATA, TCTA and the like.
  • a cathode layer is deposited on the organic material layer.
  • the material for forming the negative electrode layer may be made of any one metal or two or more alloys selected from aluminum, copper, silver, or lithium fluoride (LiF).
  • the structure that can be used for the first OLED element layer 400 or the second OLED element layer 450 is a double-sided emission structure.
  • the bottom emission structure used in the conventional OLED device emits light from the TFT substrate side using a transparent anode, and since the TFT or the wiring is an opaque portion, it emits only the portion where the TFT or the wiring is not formed. Inevitably, there was a problem that the light emitting area was narrow.
  • the conventional top emission structure proposed to solve this problem emits light to the upper side where the TFT is not formed by using a transparent cathode.
  • the top emission structure is advantageous for large displays requiring high brightness.
  • the solar cells 200 and 250 generate electricity from at least one of light emitted from the first OLED device layer 400 or light emitted from the second OLED device layer 450 or external light.
  • the external light collectively refers to all the external light that comes directly from the outside or is indirectly reflected by the external light into the internal space.
  • the electricity generated in the solar cell may be supplied to the first OLED element layer 400 or the second OLED element layer 450, or the electricity generated in the solar cell may be stored in a battery (not shown) or stored in the battery.
  • the stored electricity may be supplied to the first OLED device layer 400 or the second OLED device layer 450, and may be controlled by the switches 600 and 650.
  • the switch 600 may control the supply of electricity generated in the first solar cell 200 to the first OLED device layer 400 or stored in a battery.
  • 650 may control the supply of electricity generated in the second solar cell 250 to the second OLED device layer 450 or stored in a battery.
  • the electricity generated by the first solar cell 200 and the second solar cell 250 can be integratedly controlled.
  • the solar cell includes a second solar cell 250 formed on the second OLED element layer 450, a first solar cell 200 formed on the second solar cell 250, and a first solar cell 200. ) And the glass substrate 100 is further interposed between the second solar cell 250.
  • the solar cell used herein may be a dye-sensitized solar cell developed to have high energy efficiency using organic dyes and nanotechnology.
  • This dye-sensitized solar cell is a technology for producing electricity using dyes that generate electricity when sunlight is received. It was developed to be cheap and highly energy-efficient using cheap organic dyes and nanotechnology. Compared with conventional solar cells, the manufacturing cost can be lowered from one third to one fifth. In particular, it is possible to implement a variety of colors transparent when used in the glass window. It can transmit visible light, so it can be used as it is on windows of buildings or automobile glass.
  • the glass substrate 100 is an IZO glass layer or an ITO glass layer. Through such a glass substrate 100 it is possible to individually drive the system inside and outside the glass.
  • first solar cell 200 and the first OLED device layer 400 further comprising a first buffer layer 300 for passivation (passivation) of the first OLED device layer 400, or A second buffer layer 350 for passivation of the second OLED device layer 450 may be further included between the second solar cell 250 and the second OLED device layer 450.
  • This technique uses the first buffer layer for passivation since metal encapsulation or glass encapsulation cannot be used in the OLED device in order to efficiently form the organic layer of the OLED layer and the OLED layer of the solar cell. It is preferable that there is additionally 300 and the second buffer layer 350. Through this passivation, it is possible to protect from moisture or oxygen of the organic material layer of the first OLED device layer 400 or the second OLED device layer 450.
  • the second OLED device layer 450 is a color coordinate conversion light source, and serves to adjust the transmittance of external light or to reflect light or other internal light emitted from the first OLED device layer 400.
  • the second OLED element layer 450 is converted into black, gray, or the like under the control of a controller (not shown), and transmittance is controlled.
  • the second OLED device layer 450 in the first OLED device layer 400, etc. through color coordinate conversion
  • the emitted light is induced to be reflected by the second OLED device layer 450, so that the emitted light can be absorbed by the first solar cell 200 or the second solar cell 250.
  • the second OLED device layer 450 operates to block color of the external light through color coordinate conversion. .
  • the first solar cell 200 or the second solar cell 250 can absorb as much as possible under the control of a controller (not shown), or the first solar cell 200 or
  • the second OLED device layer 450 may make the second OLED device layer 450 transparent or translucent through color coordinate transformation.
  • FIG. 2 is a cross-sectional view of a lighting apparatus according to a second embodiment of the present invention.
  • descriptions will be given focusing on portions different from the description of the first embodiment described above in the description of the second embodiment of the present invention.
  • the lighting apparatus of the present invention includes a cell 210 formed on the window 510, and an OLED element layer 410 formed on the cell 210.
  • the OLED device layer 410 may be composed of a substrate, an anode layer, an organic material layer, and a cathode layer, and the organic material layer is generally formed in a thin film structure.
  • the structure that can be used for the OLED device layer 410 is a double-sided emission structure that can be implemented using a transparent anode and cathode devices.
  • the solar cell 210 generates electricity from at least one of light emitted from the OLED element layer 410 or external light.
  • the external light collectively refers to all the external light that comes directly from the outside or is indirectly reflected by the external light into the internal space.
  • the electricity generated in the solar cell may be supplied to the OLED device layer 410, or the electricity generated in the solar cell may be stored in a battery (not shown) or the electricity stored in the battery may be supplied to the OLED device layer 410. And, it can be controlled by the switch 610.
  • the solar cell used herein may be a dye-sensitized solar cell developed to have high energy efficiency using organic dyes and nanotechnology.
  • a buffer layer 310 for passivation of the OLED device layer 410 may be further included between the cell 210 and the OLED device layer 410.
  • This technique uses a metal encapsulation or a glass encapsulation in the OLED device to efficiently form the dye layer of the solar cell and the organic material layer of the OLED device layer, and thus the buffer layer 310 for passivation. It is further preferred that there are additional). Through this passivation, the organic material layer of the OLED device layer 410 can be protected from moisture or oxygen.
  • a reflection plate (not shown) is further interposed, or a reflective material is coated on the side of the cell 210 of the window 510 to reduce the light absorption efficiency of the cell. It is desirable to improve.

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Abstract

The present invention relates to a lighting apparatus, comprising: a second OLED device layer formed on a window; a solar cell formed on the second OLED device layer; and a first OLED device layer formed on the solar cell.

Description

조명 장치Lighting device
본 발명은 조명 장치에 관한 것으로서, 좀 더 구체적으로, 솔라셀 구조를 갖는 OLED 조명 장치를 제공하여, 투명한 솔라셀 및 양면 OLED 조명으로 저전력 구동 및 기능성 창문을 구현할 수 있는 조명 장치에 관한 것이다. The present invention relates to a lighting device, and more particularly, to an OLED lighting device having a solar cell structure, and to a lighting device capable of realizing low power driving and functional windows with transparent solar cells and double-sided OLED lighting.
OLED 개발은 1987년부터 시작되었다. OLED는 저분자 재료와 고분자 재료로 분류할 수 있으며, 코닥의 기술자에 의하여，저분자 적층막에 의한 소자 구조가 제안되는 한편, 저분자 재료에 이어 ３년 후인 1990년에는 켐브리지 대학의 연구자에 의하여，고분자막의 발광이 실현되었다. 이후 고분자 재료를 이용한 기업과 저분자 재료를 이용한 기업군들로 나뉘어 연구 개발이 진행되었다. OLED development began in 1987. OLEDs can be classified into low-molecular materials and high-molecular materials.Kodak's engineers proposed a device structure based on low-molecular-layer laminates.In 1990, three years after low-molecular-materials, OLED-based polymers were used. Light emission was realized. Since then, research and development has been divided into companies using polymer materials and companies using low molecular materials.
이와 같은 OLED는 전류 구동형 발광 소자로서, LCD 기술과 달리 OLED는 자체 발광이 가능하며, 낮은 전압에서 구동이 가능하고 얇은 박형으로 만들 수 있다는 장점을 가지고 있다. 넓은 시야각과 빠른 응답속도를 갖고 있어 일반 LCD와 달리 바로 옆에서 보아도 화질이 변하지 않으며 화면에 잔상이 남지 않아 동화상 디스플레이로서 바람직한 디스플레이 형태이다. 또한 소형 화면에서는 LCD 이상의 화질과 단순한 제조공정으로 인하여 유리한 가격 경쟁력을 갖는다. Such an OLED is a current-driven light emitting device, and unlike LCD technology, the OLED is capable of self-emission, can be driven at low voltage, and can be made thin. It has a wide viewing angle and fast response speed. Unlike ordinary LCDs, the image quality does not change even when viewed from the side, and afterimages remain on the screen. In addition, the small screen has an advantageous price competitiveness due to the image quality of LCD and simple manufacturing process.
다만, OLED의 단점으로는, 수명과 디스플레이 패널의 대형화가 쉽지 않다는 것이다. 유기 발광체 재료의 수명을 현재 30000만 시간에서 50000만 시간 이상으로 개발시키려는 노력이 지속되고 있으며, 대형화도 지속적으로 연구 개발 중이다.However, the disadvantage of OLED is that it is not easy to increase the lifespan and enlarge the display panel. Efforts have been made to develop the life of the organic light emitting material from 30 million hours to more than 50 million hours, and the size of the organic light emitting material is continuously being researched and developed.
한편, 최근에는 친환경 에너지 개발 또는 녹색 에너지 개발이 트렌드로 자리잡고 있어서, 에너지 효율 향상에 다양한 분야에서 많은 관심을 가지고 있다. On the other hand, recently, the development of environmentally friendly energy or green energy has become a trend, has attracted a lot of attention in various fields to improve energy efficiency.
이와 같은 시점에 OLED 조명 장치를 사용하면서 에너지 효율을 향상시킬 수 있는 새롭게 다양한 종류의 조명 장치에 대한 연구 개발이 요구되어 오던 실정이었다. At this point, there has been a demand for research and development on various types of lighting devices that can improve energy efficiency while using OLED lighting devices.
본 발명은, 상기와 같은 요구를 해결하기 위하여 창안된 것으로서, 솔라셀 구조를 갖는 OLED 조명 장치를 제공하는 것을 목적으로 한다. The present invention has been made in order to solve the above demands, and an object thereof is to provide an OLED lighting apparatus having a solar cell structure.
또한, 투명한 솔라셀 및 양면 OLED 조명으로 저전력 구동 및 기능성 창문을 구현할 수 있는 조명 장치를 제공하는 것을 본 발명의 또다른 목적으로 한다. In addition, it is another object of the present invention to provide a lighting device that can implement a low-power drive and functional windows with transparent solar cells and double-sided OLED lighting.
또한, 제어부의 OLED 소자층의 색좌표 변환 제어를 통해서, OLED 소자층의 투과율이나 반사율을 제어함으로써 솔라셀의 흡광 효율을 제어하는 것이 가능한 조명 장치를 제공하는 것을 본 발명의 또 다른 목적으로 한다. Another object of the present invention is to provide a lighting device capable of controlling the light absorption efficiency of a solar cell by controlling the transmittance and reflectance of the OLED element layer through color coordinate conversion control of the OLED element layer of the control unit.
상기 과제를 해결하기 위하여, 본 발명의 일 실시예에 따른 조명장치는, 창문 위에 형성된 제 2 OLED 소자층, 상기 제 2 OLED 소자층 위에 형성된 솔라셀, 및 상기 솔라셀 위에 형성된 제 1 OLED 소자층을 구비한다. In order to solve the above problems, the lighting apparatus according to an embodiment of the present invention, the second OLED device layer formed on the window, the solar cell formed on the second OLED device layer, and the first OLED device layer formed on the solar cell It is provided.
또한, 상기 솔라셀은, 상기 제 1 OLED 소자층에서 나오는 빛 또는 상기 제 2 OLED 소자층에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성한다. In addition, the solar cell generates electricity from at least one of light emitted from the first OLED device layer, light emitted from the second OLED device layer, or external light.
또한, 상기 솔라셀은, 상기 제 2 OLED 소자층 위에 형성된 제 2 솔라셀, 상기 제 2 솔라셀 위에 형성된 제 1 솔라셀로 이루어지고, 상기 제 1 솔라셀과 상기 제 2 솔라셀 사이에 유리 기판이 더 개재되어 있을 수 있다. The solar cell may include a second solar cell formed on the second OLED element layer and a first solar cell formed on the second solar cell, wherein the glass substrate is disposed between the first solar cell and the second solar cell. This may be intervened further.
또한, 상기 유리 기판은, IZO 유리층 또는 ITO 유리층인 것이 바람직하다. Moreover, it is preferable that the said glass substrate is an IZO glass layer or an ITO glass layer.
또한, 상기 제 1 솔라셀과 상기 제 1 OLED 소자층 사이에, 제 1 OLED 소자층의 패시베이션(passivation)을 위한 제 1 버퍼층을 더 포함하고, 상기 제 2 솔라셀과 상기 제 2 OLED 소자층 사이에, 제 2 OLED 소자층의 패시베이션을 위한 제 2 버퍼층을 더 포함할 수 있다. In addition, further comprising a first buffer layer for the passivation of the first OLED device layer between the first solar cell and the first OLED device layer, between the second solar cell and the second OLED device layer. In addition, a second buffer layer for passivation of the second OLED device layer may be further included.
또한, 상기 제 2 OLED 소자층은 색좌표 변환 광원으로, 외부광의 투과율을 조절하거나 제 1 OLED 소자층으로부터 나오는 빛 등 내부광을 반사할 수 있다. In addition, the second OLED device layer is a color coordinate conversion light source, and may control the transmittance of external light or reflect internal light such as light emitted from the first OLED device layer.
또한, 상기 솔라셀에서 생성된 전기를 제 1 OLED 소자층 또는 제 2 OLED 소자층으로 공급할 수 있다. In addition, the electricity generated in the solar cell may be supplied to the first OLED device layer or the second OLED device layer.
또한, 상기 솔라셀에서 생성된 전기를 배터리에 저장할 수 있다. In addition, the electricity generated in the solar cell may be stored in a battery.
한편, 본 발명의 다른 실시예에 따른 조명 장치는, 창문 위에 형성된 솔라셀, 및 상기 솔라셀 위에 형성된 OLED 소자층을 구비한다. Meanwhile, the lighting apparatus according to another embodiment of the present invention includes a solar cell formed on the window, and an OLED element layer formed on the solar cell.
또한, 상기 솔라셀은, 상기 OLED 소자층에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성할 수 있다. In addition, the solar cell may generate electricity from at least one of light emitted from the OLED device layer or external light.
또한, 상기 솔라셀과 상기 OLED 소자층 사이에, 상기 OLED 소자층의 패시베이션(passivation)을 위한 버퍼층을 더 포함할 수 있다. In addition, a buffer layer for passivation of the OLED device layer may be further included between the solar cell and the OLED device layer.
또한, 상기 창문과 상기 솔라셀 사이에는, 반사판을 더 개재하거나, 상기 창문의 상기 솔라셀 측 면에 반사물질이 도포되는 것이 바람직하다. In addition, it is preferable that a reflective plate is further interposed between the window and the solar cell, or a reflective material is applied to the solar cell side of the window.
또한, 상기 솔라셀에서 생성된 전기를 OLED 소자층으로 공급할 수 있다. In addition, the electricity generated in the solar cell may be supplied to the OLED device layer.
또한, 상기 솔라셀에서 생성된 전기를 배터리에 저장할 수 있다. In addition, the electricity generated in the solar cell may be stored in a battery.
본 발명에 따른 조명 장치는, 솔라셀 구조를 갖는 OLED 조명 장치를 제공할 수 있다. 이를 통해서, 투명한 솔라셀 및 양면 OLED 조명으로 저전력 구동 및 기능성 창문을 구현할 수 있다. The lighting device according to the present invention can provide an OLED lighting device having a solar cell structure. Through this, low-power driving and functional windows can be realized with transparent solar cells and double-sided OLED lighting.
본 발명의 제 1 실시예에 따른 조명 장치는, 외부광이 없으면서, 내부 조명(즉, 제 1 OLED 소자층 등)이 ON 상태인 경우, 제 2 OLED 소자층은 색좌표 변환을 통해 제 1 OLED 소자층 등등에서 나온 빛이 제 2 OLED 소자층에서 반사되도록 유도하여, 제 1 솔라셀 또는 제 2 솔라셀에서 재흡광될 수 있도록 하여, 에너지 효율을 극대화 할 수 있다. In the lighting apparatus according to the first embodiment of the present invention, when there is no external light and the internal lighting (that is, the first OLED element layer, etc.) is in the ON state, the second OLED element layer is the first OLED element through color coordinate conversion. By inducing the light emitted from the layer and the like to be reflected by the second OLED device layer, it can be re-absorbed in the first solar cell or the second solar cell, it is possible to maximize the energy efficiency.
다음으로, 외부광이 없으면서, 내부 조명(즉, 제 1 OLED 소자층 등)이 OFF 상태인 경우, 제 2 OLED 소자층은 색좌표 변환을 통해 외부광의 차단색으로 동작하도록 하여, 기능성 창문으로서의 역할을 할 수 있다. Next, when there is no external light and the internal illumination (i.e., the first OLED element layer, etc.) is OFF, the second OLED element layer operates as a blocking color of the external light through color coordinate conversion, thereby serving as a functional window. can do.
다음으로, 외부광이 있는 경우, 제어부(미도시)의 제어에 따라, 제 1 솔라셀 또는 제 2 솔라셀에서 최대한 흡광할 수 있도록 하거나 또는 제 1 솔라셀 또는 제 2 솔라셀에서의 흡광 비율을 제어할 수 있도록, 제 2 OLED 소자층는 색좌표 변환을 통해서 제 2 OLED 소자층을 투명하게 하거나 특정색을 가져서 반투명하게 할 수 있는 장점이 있다. Next, when there is external light, according to the control of the controller (not shown), the absorption of the first solar cell or the second solar cell to the maximum, or the absorption ratio of the first solar cell or the second solar cell In order to be able to control, the second OLED device layer has an advantage of making the second OLED device layer transparent or having a specific color to be translucent through color coordinate conversion.
이와 같은 제어부의 제 2 OLED 소자층에 대한 색좌표 변환 제어를 통해서, 외부에 위치하는 사람들에게는 창문의 색감이 달라진다고 느끼게 만드는 효과를 갖는다. Through the color coordinate conversion control of the second OLED element layer of the control unit, there is an effect that makes it possible for people located outside to feel the color of the window is different.
다음으로, 본 발명의 제 2 실시예 따른 조명 장치는, 간단한 구조를 통해서, 솔라셀에서 외부광이나 내부광을 흡광하여 에너지 효율을 높일 수 있으며, 창문과 솔라셀 사이에 개재된 반사판(미도시)을 구비하거나, 창문의 솔라셀측 면에 반사물질이 도포되는 경우, 솔라셀의 흡광 효율을 향상시킬 수 있는 장점을 갖는다. Next, the lighting device according to the second embodiment of the present invention, through a simple structure, absorbs external light or internal light from the solar cell to increase energy efficiency, and a reflector (not shown) interposed between the window and the solar cell. ), Or when the reflective material is applied to the solar cell side of the window, it has the advantage of improving the light absorption efficiency of the solar cell.
도 1은, 본 발명의 제 1 실시예에 따른 조명 장치의 단면을 나타낸 도면이다. 1 is a cross-sectional view of a lighting apparatus according to a first embodiment of the present invention.
도 2는, 본 발명의 제 2 실시예에 따른 조명 장치의 단면을 나타낸 도면이다. 2 is a cross-sectional view of a lighting apparatus according to a second embodiment of the present invention.
이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.
따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.
(제 1 실시예)(First embodiment)
도 1은, 본 발명의 제 1 실시예에 따른 조명 장치의 단면을 나타낸 도면이다. 이하 도 1을 참조하여, 본 발명의 제 1 실시예에 따른 조명 장치를 설명하기로 한다. 1 is a cross-sectional view of a lighting apparatus according to a first embodiment of the present invention. Hereinafter, a lighting apparatus according to a first embodiment of the present invention will be described with reference to FIG. 1.
도 1에 도시된 바와 같이, 조명 장치는, 창문(500) 위에 형성된 제 2 OLED 소자층(450), 제 2 OLED 소자층(450) 위에 형성된 솔라셀(200)(250), 솔라셀 위에 형성된 제 1 OLED 소자층(400)을 구비한다. As shown in FIG. 1, the lighting device includes a second OLED device layer 450 formed on the window 500, a solar cell 200 and 250 formed on the second OLED device layer 450, and a cell formed on the solar cell. A first OLED device layer 400 is provided.
여기서, 조명 장치는, 가정용으로 가정의 거실이나 주방, 침실, 욕실 등에 사용되는 조명장치는 물론이고, 상업용으로 사무실이나 공장이나 레스토랑 등 음식점 등 상업시설에 사용되는 조명장치, 항공기, 자동차나 차량 등에도 적용 가능한 것으로, 외부광이 들어오는 유리창(500) 등이 있으면 어디든지 사용이 가능한 조명 장치이다. Here, the lighting device is a lighting device used in a living room, a kitchen, a bedroom, a bathroom, etc. for home use, as well as a lighting device used in a commercial facility such as an office, a factory, a restaurant, a restaurant, a vehicle, a vehicle, a vehicle, It is also applicable, if there is a glass window 500, etc. that receives the external light is a lighting device that can be used anywhere.
제 1 OLED 소자층(400) 또는 제 2 OLED 소자층(450)는, 기판, 양극층, 유기물층, 음극층으로 구성될 수 있으며, 유기물층은 박막 구조로 형성되는 것이 일반적이다. 고분자 유기물질을 사용하는 경우, 유기물층은 발광층과 홀 주입층의 2층 구조로 이루어지는 것이 일반적이지만, 이에 반해서 저분자 유기물질을 사용하는 경우, 유기물층은, 홀 주입층, 홀 수송층, 발광층, 홀 블록층, 전자 수송층의 5층 구조 등 다층 구조를 가지게 되는 것이 일반적이다. The first OLED device layer 400 or the second OLED device layer 450 may be formed of a substrate, an anode layer, an organic material layer, and a cathode layer, and the organic material layer is generally formed in a thin film structure. In the case of using a high molecular organic material, the organic material layer generally has a two-layer structure of a light emitting layer and a hole injection layer. On the other hand, in the case of using a low molecular organic material, the organic material layer includes a hole injection layer, a hole transport layer, a light emitting layer, and a hole block layer. It is common to have a multilayered structure, such as the 5-layered structure of an electron carrying layer.
또한, 기판은 일반적으로 유리(glass)를 사용하는 것이 바람직하고, 기판 위의 그리드는 양극층에 맞닿아 있으며, 양극층을 조명용 구동장치의 배선부에 연결할 때 양극층의 전기적 저항값을 낮추는 역할을 한다. 그리드는 통상 양극층보다 작은 저항값을 가진 금속으로서, 크롬(Cr), 구리(Cu), 몰리브덴(Mo), 니켈(Ni), 알루미늄(Al), 은(Ag) 또는 금(Au)이 될 수 있다. 그리드는 기판 상의 증착, 감광성 포토레지스트의 도포, 현상, 에칭 등의 공정으로 형성될 수 있다. 필요에 따라서 본 발명의 기판은 투명하여야 하므로, 그리드 없이 구현할 수도 있다. In addition, it is preferable that the substrate is generally made of glass, and the grid on the substrate is in contact with the anode layer, and serves to lower the electrical resistance value of the anode layer when connecting the anode layer to the wiring part of the driving device for lighting. Do it. The grid is usually a metal with a smaller resistance value than the anode layer, which will be chromium (Cr), copper (Cu), molybdenum (Mo), nickel (Ni), aluminum (Al), silver (Ag) or gold (Au). Can be. The grid may be formed by a process such as deposition on a substrate, application of photosensitive photoresist, development, etching, or the like. If necessary, since the substrate of the present invention should be transparent, it may be implemented without a grid.
양극층은 OLED 소자층의 양극에 해당하는 애노드(Anode) 전극이며, 소재는 면 저항이 작고 투과성이 좋은 산화인듐주석(Indium Tin Oxide; ITO) 또는 산화인듐아연 (Indium zinc oxide; IZO) 등의 투명 전도성 물질을 사용할 수 있다. 그리드가 있는 경우, 그리드 상에 양극층을 형성함으로써 양극층의 저항이 낮아지면서 이후 외부 구동회로와 연결하여 OLED 장치를 구동시 소비전력 및 구동전압이 낮아지게 되어 소자의 전기적 특성을 향상시킬 수 있다.The anode layer is an anode electrode corresponding to the anode of the OLED element layer, and the material is indium tin oxide (ITO) or indium zinc oxide (IZO), which has a small surface resistance and good permeability. Transparent conductive materials can be used. If there is a grid, by forming an anode layer on the grid, the resistance of the anode layer is lowered, and then the power consumption and driving voltage are lowered when driving the OLED device by connecting with an external driving circuit, thereby improving the electrical characteristics of the device. .
유기물층은 양극층의 상부에 형성되며 OLED 소자층에서 발광이 일어나는 부분으로서 발광 효율을 높이기 위하여 정공 주입층(Hole Injection Layer; HIL), 정공 수송층(Hole Transport Layer; HTL)), 발광층(Emitting Material Layer; EML), 전자 수송층(Electron Transfer Layer; ETL) 및 전자 공급층(Electron Injection Layer; EIL) 등을 차례로 증착하여 형성한다. 유기물층으로 사용되는 유기물질은 Alq3, TPD, PBD, m-MTDATA,TCTA 등이다.The organic material layer is formed on top of the anode layer and emits light in the OLED device layer to improve light emission efficiency (Hole Injection Layer (HIL), Hole Transport Layer (HTL)), Emitting Material Layer EML), an Electron Transfer Layer (ETL), an Electron Injection Layer (EIL), and the like are sequentially formed. Organic materials used as the organic material layer are Alq3, TPD, PBD, m-MTDATA, TCTA and the like.
또한, 유기물층 상에 음극층을 증착한다. 음극층 형성용 물질은 알루미늄, 구리, 은 또는 불소화리듐(LiF)에서 선택된 어느 하나의 금속 또는 둘 이상의 합금으로 이루어질 수 있다.In addition, a cathode layer is deposited on the organic material layer. The material for forming the negative electrode layer may be made of any one metal or two or more alloys selected from aluminum, copper, silver, or lithium fluoride (LiF).
한편, 제 1 OLED 소자층(400) 또는 제 2 OLED 소자층(450)에 사용될 수 있는 구조는, 양면 이미션 구조이다. Meanwhile, the structure that can be used for the first OLED element layer 400 or the second OLED element layer 450 is a double-sided emission structure.
종래 OLED 소자에서 사용되던, 보텀 이미션(bottom emission) 구조는 투명한 양극을 이용하여 TFT 기판측에서 빛을 방출하며, TFT나 배선은 불투명 부분이므로，TFT나 배선이 형성되지 않은 부분밖에 빛을 방출할 수 없고，결국 광 방출영역이 좁다는 문제가 있었다. 이를 해결하기 위해 제안된 종래의 톱 이미션 구조는 투명한 음극을 이용하여 TFT가 형성되고 있지 않는 상측으로 빛을 방출한다. 이와 같이 TFT 기판을 이용하지 않고 빛을 방출하므로，TFT나 배선의 배치에 관계없이 빛을 방출할 수 있고，광 방출 영역이 폭넓게 가능하다. 특히 고휘도가 필요한 대형 디스플레이에는 톱 이미션 구조가 유리하다고 할 수 있다. The bottom emission structure used in the conventional OLED device emits light from the TFT substrate side using a transparent anode, and since the TFT or the wiring is an opaque portion, it emits only the portion where the TFT or the wiring is not formed. Inevitably, there was a problem that the light emitting area was narrow. The conventional top emission structure proposed to solve this problem emits light to the upper side where the TFT is not formed by using a transparent cathode. Thus, since light is emitted without using a TFT substrate, it is possible to emit light regardless of the arrangement of TFTs or wirings, and the light emitting area can be widely used. In particular, the top emission structure is advantageous for large displays requiring high brightness.
하지만, 본 발명에서는, 양면으로 발광하는 구조가 적합하므로, 투명한 양극 또는 음극 소자를 사용하여 구현이 가능한 양면 이미션 구조를 채용하여야 한다. However, in the present invention, since a structure emitting light on both sides is suitable, a double-sided emission structure that can be implemented using a transparent anode or cathode device should be adopted.
여기서, 솔라셀(200)(250)은, 제 1 OLED 소자층(400)에서 나오는 빛 또는 제 2 OLED 소자층(450)에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성하게 된다. 여기서 외부광이란, 외부로부터 직접 들어오거나 외부광이 내부 공간에 반사되어 간접적으로 들어오는 외부광을 모두 통칭하는 것이다. Here, the solar cells 200 and 250 generate electricity from at least one of light emitted from the first OLED device layer 400 or light emitted from the second OLED device layer 450 or external light. Here, the external light collectively refers to all the external light that comes directly from the outside or is indirectly reflected by the external light into the internal space.
또한, 솔라셀에서 생성된 전기를 제 1 OLED 소자층(400) 또는 제 2 OLED 소자층(450)으로 공급할 수 있으며, 또는 솔라셀에서 생성된 전기를 배터리(미도시)에 저장하거나, 배터리에 저장된 전기를 제 1 OLED 소자층(400) 또는 제 2 OLED 소자층(450)으로 공급할 수 있으며, 이를 스위치(600)(650)로 제어하게 할 수 있다. 여기서 도 1에 도시된 바와 같이, 스위치(600)은 제 1 솔라셀(200)에서 생성된 전기를 제 1 OLED 소자층(400)으로 공급하거나 배터리로 저장하는 것을 제어하게 할 수 있으며, 스위치(650)는 제 2 솔라셀(250)에서 생성된 전기를 제 2 OLED 소자층(450)으로 공급하거나 배터리로 저장하는 것을 제어하게 할 수 있다. 혹은, 제 1 솔라셀(200)과 제 2 솔라셀(250)에서 생성된 전기를 통합적으로 스위칭 제어할 수 있음은 물론이다. In addition, the electricity generated in the solar cell may be supplied to the first OLED element layer 400 or the second OLED element layer 450, or the electricity generated in the solar cell may be stored in a battery (not shown) or stored in the battery. The stored electricity may be supplied to the first OLED device layer 400 or the second OLED device layer 450, and may be controlled by the switches 600 and 650. Here, as shown in FIG. 1, the switch 600 may control the supply of electricity generated in the first solar cell 200 to the first OLED device layer 400 or stored in a battery. 650 may control the supply of electricity generated in the second solar cell 250 to the second OLED device layer 450 or stored in a battery. Alternatively, it is a matter of course that the electricity generated by the first solar cell 200 and the second solar cell 250 can be integratedly controlled.
또한, 솔라셀은, 제 2 OLED 소자층(450) 위에 형성된 제 2 솔라셀(250), 제 2 솔라셀(250) 위에 형성된 제 1 솔라셀(200)로 이루어지고, 제 1 솔라셀(200)과 제 2 솔라셀(250) 사이에 유리 기판(100)이 더 개재되어 있는 것이 바람직하다. In addition, the solar cell includes a second solar cell 250 formed on the second OLED element layer 450, a first solar cell 200 formed on the second solar cell 250, and a first solar cell 200. ) And the glass substrate 100 is further interposed between the second solar cell 250.
한편, 여기서 사용되는 솔라셀은 유기 염료와 나노 기술을 이용하여 고도의 에너지 효율을 갖도록 개발된 염료 감응 솔라셀일 수 있다. 이와 같은 염료 감응 솔라셀은, 태양빛을 받으면 전기를 생산하는 염료를 이용해 전기를 생산하는 기술로서, 값싼 유기 염료와 나노 기술을 이용하여 저렴하면서도 고도의 에너지 효율을 갖도록 개발된 것으로, 실리콘을 사용하는 기존 태양전지에 비해 제조단가가 3분의1에서 최대 5분의1 수준으로 낮출 수 있는 장점을 갖는다. 특히, 유리창에 활용했을 때 투명하고 다양한 색 구현이 가능하다. 가시광선을 투과시킬 수 있어 건물의 유리창이나 자동차 유리에 그대로 붙여 사용할 수도 있다. Meanwhile, the solar cell used herein may be a dye-sensitized solar cell developed to have high energy efficiency using organic dyes and nanotechnology. This dye-sensitized solar cell is a technology for producing electricity using dyes that generate electricity when sunlight is received. It was developed to be cheap and highly energy-efficient using cheap organic dyes and nanotechnology. Compared with conventional solar cells, the manufacturing cost can be lowered from one third to one fifth. In particular, it is possible to implement a variety of colors transparent when used in the glass window. It can transmit visible light, so it can be used as it is on windows of buildings or automobile glass.
여기서, 유리 기판(100)은, IZO 유리층 또는 ITO 유리층이다. 이와 같은 유리 기판(100)을 통해서 유리 안팎의 시스템을 각각 개별 구동하는 것이 가능하게 된다. Here, the glass substrate 100 is an IZO glass layer or an ITO glass layer. Through such a glass substrate 100 it is possible to individually drive the system inside and outside the glass.
또한, 상기 제 1 솔라셀(200)과 상기 제 1 OLED 소자층(400) 사이에, 제 1 OLED 소자층(400)의 패시베이션(passivation)을 위한 제 1 버퍼층(300)을 더 포함하거나, 상기 제 2 솔라셀(250)과 상기 제 2 OLED 소자층(450) 사이에, 제 2 OLED 소자층(450)의 패시베이션을 위한 제 2 버퍼층(350)을 더 포함할 수 있다. In addition, between the first solar cell 200 and the first OLED device layer 400, further comprising a first buffer layer 300 for passivation (passivation) of the first OLED device layer 400, or A second buffer layer 350 for passivation of the second OLED device layer 450 may be further included between the second solar cell 250 and the second OLED device layer 450.
이것은 본 기술에서는 솔라셀의 염료층과 OLED 소자층의 유기물층을 효율적으로 형성하기 위해, OLED 소자에 금속 캡(metal encapsulation)이나 유리 캡(glass encapsulation)을 사용할 수 없기 때문에, 패시베이션을 위한 제 1 버퍼층(300)과 제 2 버퍼층(350)이 추가적으로 더 있는 것이 바람직하다. 이러한 패시베이션을 통해서 제 1 OLED 소자층(400) 또는 제 2 OLED 소자층(450)의 유기물층의 수분이나 산소로부터 보호할 수 있게 된다. This technique uses the first buffer layer for passivation since metal encapsulation or glass encapsulation cannot be used in the OLED device in order to efficiently form the organic layer of the OLED layer and the OLED layer of the solar cell. It is preferable that there is additionally 300 and the second buffer layer 350. Through this passivation, it is possible to protect from moisture or oxygen of the organic material layer of the first OLED device layer 400 or the second OLED device layer 450.
또한, 제 2 OLED 소자층(450)은 색좌표 변환 광원으로, 외부광의 투과율을 조절하거나 제 1 OLED 소자층(400)으로부터 나오는 빛 또는 다른 내부광을 반사하는 역할을 하게 된다. 제 2 OLED 소자층(450)은 제어부(미도시)의 제어에 따라, 검은색, 회색 등으로 변환되며, 투과율이 제어된다. In addition, the second OLED device layer 450 is a color coordinate conversion light source, and serves to adjust the transmittance of external light or to reflect light or other internal light emitted from the first OLED device layer 400. The second OLED element layer 450 is converted into black, gray, or the like under the control of a controller (not shown), and transmittance is controlled.
이하, 본 발명의 제 1 실시예에 따른 조명 장치의 동작을 살펴보기로 한다. Hereinafter, the operation of the lighting apparatus according to the first embodiment of the present invention will be described.
먼저, 외부광이 없으면서, 내부 조명(즉, 제 1 OLED 소자층(400) 등)이 ON 상태인 경우, 제 2 OLED 소자층(450)는 색좌표 변환을 통해 제 1 OLED 소자층(400) 등에서 나온 빛이 제 2 OLED 소자층(450)에서 반사되도록 유도하여, 제 1 솔라셀(200) 또는 제 2 솔라셀(250)에서 재흡광될 수 있도록 한다. First, when there is no external light and the internal illumination (that is, the first OLED device layer 400, etc.) is in the ON state, the second OLED device layer 450 in the first OLED device layer 400, etc. through color coordinate conversion The emitted light is induced to be reflected by the second OLED device layer 450, so that the emitted light can be absorbed by the first solar cell 200 or the second solar cell 250.
다음으로, 외부광이 없으면서, 내부 조명(즉, 제 1 OLED 소자층(400) 등)이 OFF 상태인 경우, 제 2 OLED 소자층(450)는 색좌표 변환을 통해 외부광의 차단색으로 동작하도록 한다. Next, when there is no external light and the internal lighting (that is, the first OLED device layer 400, etc.) is OFF, the second OLED device layer 450 operates to block color of the external light through color coordinate conversion. .
다음으로, 외부광이 있는 경우, 제어부(미도시)의 제어에 따라, 제 1 솔라셀(200) 또는 제 2 솔라셀(250)에서 최대한 흡광할 수 있도록 하거나 또는 제 1 솔라셀(200) 또는 제 2 솔라셀(250)에서의 흡광 비율을 제어할 수 있도록, 제 2 OLED 소자층(450)는 색좌표 변환을 통해서 제 2 OLED 소자층(450)을 투명하게 하거나 반투명하게 할 수 있다. Next, when there is external light, the first solar cell 200 or the second solar cell 250 can absorb as much as possible under the control of a controller (not shown), or the first solar cell 200 or In order to control the light absorption ratio of the second solar cell 250, the second OLED device layer 450 may make the second OLED device layer 450 transparent or translucent through color coordinate transformation.
이와 같은 제어부의 제 2 OLED 소자층에 대한 색좌표 변환 제어를 통해서, 외부에 위치하는 사람들에게는 창문의 색감이 달라진다고 느끼게 만드는 효과를 갖는다. Through the color coordinate conversion control of the second OLED element layer of the control unit, there is an effect that makes it possible for people located outside to feel the color of the window is different.
(제 2 실시예)(Second embodiment)
도 2는, 본 발명의 제 2 실시예에 따른 조명 장치의 단면을 나타낸 도면이다. 이하, 본 발명의 제 2 실시예의 설명 가운데, 위에서 설명한 제 1 실시예의 설명과 다른 부분을 위주로 설명하기로 한다. 2 is a cross-sectional view of a lighting apparatus according to a second embodiment of the present invention. Hereinafter, descriptions will be given focusing on portions different from the description of the first embodiment described above in the description of the second embodiment of the present invention.
도 2에 도시된 바와 같이, 본 발명의 조명 장치는, 창문(510) 위에 형성된 솔라셀(210), 및 상기 솔라셀(210) 위에 형성된 OLED 소자층(410)을 구비한다. As shown in FIG. 2, the lighting apparatus of the present invention includes a cell 210 formed on the window 510, and an OLED element layer 410 formed on the cell 210.
OLED 소자층(410)은, 기판, 양극층, 유기물층, 음극층으로 구성될 수 있으며, 유기물층은 박막 구조로 형성되는 것이 일반적이다. OLED 소자층(410)에 사용될 수 있는 구조는, 투명한 양극과 음극 소자를 사용하여 구현이 가능한 양면 이미션 구조이다. The OLED device layer 410 may be composed of a substrate, an anode layer, an organic material layer, and a cathode layer, and the organic material layer is generally formed in a thin film structure. The structure that can be used for the OLED device layer 410 is a double-sided emission structure that can be implemented using a transparent anode and cathode devices.
여기서, 솔라셀(210)은, OLED 소자층(410)에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성하게 된다. 여기서 외부광이란, 외부로부터 직접 들어오거나 외부광이 내부 공간에 반사되어 간접적으로 들어오는 외부광을 모두 통칭하는 것이다. Here, the solar cell 210 generates electricity from at least one of light emitted from the OLED element layer 410 or external light. Here, the external light collectively refers to all the external light that comes directly from the outside or is indirectly reflected by the external light into the internal space.
또한, 솔라셀에서 생성된 전기를 OLED 소자층(410)으로 공급할 수 있으며, 또는 솔라셀에서 생성된 전기를 배터리(미도시)에 저장하거나 배터리에 저장된 전기를 OLED 소자층(410)으로 공급할 수 있으며, 이를 스위치(610)로 제어하게 할 수 있다. In addition, the electricity generated in the solar cell may be supplied to the OLED device layer 410, or the electricity generated in the solar cell may be stored in a battery (not shown) or the electricity stored in the battery may be supplied to the OLED device layer 410. And, it can be controlled by the switch 610.
한편, 여기서 사용되는 솔라셀은 유기 염료와 나노 기술을 이용하여 고도의 에너지 효율을 갖도록 개발된 염료 감응 솔라셀일 수 있다. Meanwhile, the solar cell used herein may be a dye-sensitized solar cell developed to have high energy efficiency using organic dyes and nanotechnology.
또한, 솔라셀(210)과 OLED 소자층(410) 사이에, OLED 소자층(410)의 패시베이션(passivation)을 위한 버퍼층(310)을 더 포함할 수 있다. In addition, a buffer layer 310 for passivation of the OLED device layer 410 may be further included between the cell 210 and the OLED device layer 410.
이것은 본 기술에서는 솔라셀의 염료층과 OLED 소자층의 유기물층을 효율적으로 형성하기 위해, OLED 소자에 금속 캡(metal encapsulation)이나 유리 캡(glass encapsulation)을 사용할 수 없기 때문에, 패시베이션을 위한 버퍼층(310)이 추가적으로 더 있는 것이 바람직하다. 이러한 패시베이션을 통해서 OLED 소자층(410)의 유기물층의 수분이나 산소로부터 보호할 수 있게 된다. This technique uses a metal encapsulation or a glass encapsulation in the OLED device to efficiently form the dye layer of the solar cell and the organic material layer of the OLED device layer, and thus the buffer layer 310 for passivation. It is further preferred that there are additional). Through this passivation, the organic material layer of the OLED device layer 410 can be protected from moisture or oxygen.
또한, 창문(510)과 솔라셀(210) 사이에는, 반사판(미도시)을 더 개재하거나, 창문(510)의 솔라셀(210) 측 면에 반사물질이 도포되는 것이 솔라셀의 흡광 효율을 향상시키는 데 바람직하다. In addition, between the window 510 and the cell 210, a reflection plate (not shown) is further interposed, or a reflective material is coated on the side of the cell 210 of the window 510 to reduce the light absorption efficiency of the cell. It is desirable to improve.
이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술 사상과 아래에 기재될 특허청구범위의 균등 범위 내에서 다양한 수정, 변경 및 변형이 가능함은 물론이다. As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications, changes and variations are possible within the scope of the claims to be described.

Claims (14)

  1. 창문 위에 형성된 제 2 OLED 소자층, A second OLED element layer formed on the window,
    상기 제 2 OLED 소자층 위에 형성된 솔라셀, A cell formed on the second OLED element layer,
    상기 솔라셀 위에 형성된 제 1 OLED 소자층을 구비하는 조명 장치.And a first OLED element layer formed on the solar cell.
  2. 제 1 항에 있어서, The method of claim 1,
    상기 솔라셀은, 상기 제 1 OLED 소자층에서 나오는 빛 또는 상기 제 2 OLED 소자층에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성하는 조명 장치. The solar cell is an illumination device for generating electricity from at least one of the light emitted from the first OLED device layer or the light or external light emitted from the second OLED device layer.
  3. 제 1 항에 있어서, The method of claim 1,
    상기 솔라셀은, The solar cell,
    상기 제 2 OLED 소자층 위에 형성된 제 2 솔라셀, A second solar cell formed on the second OLED element layer,
    상기 제 2 솔라셀 위에 형성된 제 1 솔라셀로 이루어지고, A first cell formed on the second cell,
    상기 제 1 솔라셀과 상기 제 2 솔라셀 사이에 유리 기판이 더 개재되어 있는 조명 장치. And a glass substrate further interposed between the first solar cell and the second solar cell.
  4. 제 3 항에 있어서, The method of claim 3, wherein
    상기 유리 기판은, IZO 유리층 또는 ITO 유리층인 조명 장치. The glass substrate is an IZO glass layer or an ITO glass layer.
  5. 제 3 항에 있어서, The method of claim 3, wherein
    상기 제 1 솔라셀과 상기 제 1 OLED 소자층 사이에, 제 1 OLED 소자층의 패시베이션(passivation)을 위한 제 1 버퍼층을 더 포함하고, Further comprising a first buffer layer between the first solar cell and the first OLED device layer for passivation of the first OLED device layer,
    상기 제 2 솔라셀과 상기 제 2 OLED 소자층 사이에, 제 2 OLED 소자층의 패시베이션을 위한 제 2 버퍼층을 더 포함하는 조명 장치. And a second buffer layer for passivation of the second OLED device layer between the second solar cell and the second OLED device layer.
  6. 제 1 항에 있어서, The method of claim 1,
    상기 제 2 OLED 소자층은 색좌표 변환 광원으로, 외부광의 투과율을 조절하거나 제 1 OLED 소자층으로부터 나오는 빛 등 내부광을 반사하는 조명 장치. The second OLED element layer is a color coordinate conversion light source, and adjusts the transmittance of the external light or the illumination device reflecting the internal light, such as light emitted from the first OLED element layer.
  7. 제 2 항에 있어서, The method of claim 2,
    상기 솔라셀에서 생성된 전기를 제 1 OLED 소자층 또는 제 2 OLED 소자층으로 공급하는 조명 장치. Lighting device for supplying the electricity generated in the cell to the first OLED device layer or the second OLED device layer.
  8. 제 2 항에 있어서, The method of claim 2,
    상기 솔라셀에서 생성된 전기를 배터리에 저장하는 조명 장치.Lighting device for storing the electricity generated in the cell in the battery.
  9. 창문 위에 형성된 솔라셀, 및A solar cell formed on the window, and
    상기 솔라셀 위에 형성된 OLED 소자층을 구비하는 조명 장치.Lighting device having an OLED element layer formed on the cell.
  10. 제 9 항에 있어서, The method of claim 9,
    상기 솔라셀은, 상기 OLED 소자층에서 나오는 빛 또는 외부광 어느 하나 이상으로부터 전기를 생성하는 조명 장치. The solar cell is an illumination device for generating electricity from at least one of the light emitted from the OLED element layer or external light.
  11. 제 9 항에 있어서, The method of claim 9,
    상기 솔라셀과 상기 OLED 소자층 사이에, 상기 OLED 소자층의 패시베이션(passivation)을 위한 버퍼층을 더 포함하는 조명 장치. And a buffer layer between the solar cell and the OLED device layer for passivation of the OLED device layer.
  12. 제 9 항에 있어서, The method of claim 9,
    상기 창문과 상기 솔라셀 사이에는, 반사판을 더 개재하거나, 상기 창문의 상기 솔라셀 측 면에 반사물질이 도포된 조명 장치. Between the window and the cell, the lighting device further interposed a reflection plate, or the reflective material is coated on the side of the cell of the window.
  13. 제 10 항에 있어서, The method of claim 10,
    상기 솔라셀에서 생성된 전기를 OLED 소자층으로 공급하는 조명 장치. Lighting device for supplying the electricity generated in the cell to the OLED device layer.
  14. 제 10 항에 있어서, The method of claim 10,
    상기 솔라셀에서 생성된 전기를 배터리에 저장하는 조명 장치.Lighting device for storing the electricity generated in the cell in the battery.
PCT/KR2009/007622 2009-12-02 2009-12-21 Lighting apparatus WO2011068278A1 (en)

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